Grease cup



.um 23, w25. 1,543,697

A. KOWALSKY GREASE CUP Filed June 19, 1922 Patented ``lune 23, 1925'.

UNITED STATES@ ifi/'Sg"rflazNT:ciu-ict'.v

ANDREW'KOWALSKY, or OAK PARK, ILLINOIS,Y AssIGNOR To INTERNATIONAL IIAR- vEsTER COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or NEW JERSEY.

GREASE oir?.

Application filed June 19,

To all whom t may concern:

Be it lInown that I, ANDREW KowALsiIY, a citizen of the United States, residing at Oak Park, in the county of Cook and State ot Illinois, have invented certain ne-w and useful Improvements in Grease Cups, ot which the following is a full, clear, and eX- act specification.

This invention relates to'grease cups of the compression type consisting of a stationary base adapted to be screwed into the part to be greased and of a top part or cap which is internally threaded to engage over the externally threaded top of the base, and the invention is more particularly directed to means for preventing the top from unscrewing or working loose as the result ot vibration ot' the part on which the cup is carried. I attain the object desired by providing the cup with a locking device or detent which, while permitting screwing and unscrewing of the cap` upon the bottom part or base of the cup, Will, at the same time, act automatically to hold and practically look the two parts in adjusted position so firmly as to overcome the eiect of vibration, and my invention consists in an improved construction and arrangement of elements for the purpose sta-ted, as will be understood from the following description and by reti'- erence to the. accompanying drawings in which- Fig. 1 is a side view of a cup including my invention, with parts of the cap and base broken away to show the interior construction;

Fig. 2 is a side view of the cup base;

Fig. 3 is a. top vie-w of the cup base with the detent spring in place;

Fig. 4 is a similar View without the spring;

Fig. 5 is a detail sectional view taken on the line 5-5 of Fig. 3, but with the cap in place, showing the relation of the detent spring to the base and cap;

F ig. 6 is a similar vie-w with cap omitted taken on the line 6-6 of Fig. 3; and

Fig. 7 is a detail view of the detent spring.

The cup consists of a b-ase 10 provided with an externally threaded shank 11 which is preferably formed with a wrench receiving surface 12. The base 10 has an externally threaded annular rim 13 and at one point the edge of this rim is cut out to form a hert or opening 14 the endl walls of which 1922. Serial No. 569,275.

are undercut as at 14a to provide the Overhanging free corners 14h. The cover or cap 15 which holds the grease is threaded inte-rnally to engage the externally threaded rim 13 on the base and, by rotating the cap by hand, it may be moved upon the threaded rim 13 up or down according to the direction of rotation. To overcome the effect of vibration upon the cup which tends to unscrew or loosen the cover, I provide, between the meeting Yfaces of the cap and base of the cup', an automatically acting yielding detent or lock which, whileyielding to permit screwing of the cap upon the base by hand, will, at the saine time, operate to lock or hold the parts in their adjusted position with suiiicient irmness to prevent the cap from jarring loose by vibration. This detent consists of a resilient element such as the length of spring wire 16 which is curved to con- I'orm to the shape of the cup` and positioned within the edge of the cup base with a por' tion extending across the opening or kerf 14. The part of the spring wire extending across the opening 14; is kinled or bent outwardly as at 17 in a manner to protrude slightly beyond the side of the base so as to engage the threads on the cap 15. In Order to retain the detent spring 16 in position Within the base, the free corners 14;b on each side of the kerf 14 are bent inwardly over the spring wire 16 as best seen in Fig. 3, and the edge of the rim 13 is indented at a plurality of equally space-d points in its cirn cumference as at 18, the inturned corners 141 and dents 18 `together constituting means yfor preventing dislodgement of the detent spring which is not otherwise secured at any point to the cup base.

lVith the construction above described, there is provided a resilient protuberance on the base of the cup consisting of the bend 17 ot the spring detent which bend presents a considerable portion of its outer face to the threads on the inside of the cap 15 making a yielding pressure thereon and causing a degree ot :trictional resistance sufficient to entirely overcome the loosening or unscrewing eltect of jarring Or vibration of the part on which the cup may be used.

vWhile the specic form of my invention above described is that preferred, variations therefrom are contemplated within the scope of the following claim In a grease cup, the combination of a base inwardiy over the Wire and the edges of the base being formed with inward indentations at spaced point-s to reta-n the Wire in position.

In testimony whereof I ziiiixk my signature.

ANDREW KOWALSKY. 

